Study of the RTM effect in gravity disturbances and height anomalies at future IHRF stations in Brazil using different approaches, Digital Elevation Model with forests and buildings removed and lateral topographic density model

Study of the RTM effect in gravity disturbances and height anomalies at future IHRF stations in Brazil using different approaches, Digital Elevation Model with forests and buildings removed and lateral topographic density model | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Study of the RTM effect in gravity disturbances and height anomalies at future IHRF stations in Brazil using different approaches, Digital Elevation Model with forests and buildings removed and lateral topographic density model Thiago Kerr Padilha, Tiago Lima Rodrigues This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4790672/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The present work aimed to evaluate the use of different approaches (rectangular prisms, polyhedrons, tesseroids and point mass) in spatial domain to provide RTM gravity disturbance and height anomaly at future IHRS stations in Brazil. The RTM gravity disturbances are calculated only at the stations as example, since they possibly contribute more to the calculation of the anomalous potential via Hotine’s integral (innermost zone). For the numerical tests, FABDEM V1-2 Digital Elevation Model (DEM) has been tested. In the case of stations in coastal regions, additional bathymetric data from the SRTM15+ DEM have been used to complement the continental data. For the density information, we have used the UNB_TopoDensT_2v01 model with 30 arc sec resolution. As results, in terms of RTM height anomaly, the values obtained by each approach separately were concordant at submillimeter level, regardless of integration radius value. For RTM gravity disturbances the differences reached mGal level. In this case, the use of combined approaches has also been tested. For accuracy analysis, the computed RTM values ​​were compared with reference values. For the case of gravity disturbance, there was no tendency for better or worse results using a given approach. In the context of density values, the divergences reached up to approximately 5 mm in RTM height anomaly and 1 mGal in gravity disturbance. The use of FABDEM V1-2 in substitution to the COPERNICUS 30 DEM proposed differences of approximately 4mgal in relation to gravity disturbances, while for height anomalies, the difference varied between 1mm and 5mm. Residual terrain Modelling IHRS spatial domain approaches UNB_TopoDensT FABDEM Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4790672","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":337723388,"identity":"7dd1e8f0-8c63-44b6-81f5-34f563e48763","order_by":0,"name":"Thiago Kerr Padilha","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1klEQVRIiWNgGAWjYDACCcYGIJkAxMwHGCqAlAEhHTwILWwJDGeI0wKmQFp4DIjTYi/d3PjxS0WanPnsM98kDu64x2AufYCALTIHm6VlzuQYy5zL3SZx8Ewxg2VfAiGHJTZIS7ZVJM7g4d0m/bEtgcHgDEG/JDb/Bmqpn8HD80ziIJFa2iQ/tuUkSPDwsBGp5UZimzXDmTTDGTxsxhYHzyTwWPYQ0MI+I/3xzR8VyfISPMwPbxzckSBnzkNACwgwwxUBo5UYDUCFP5C0jIJRMApGwSjAAAC1xUCFqrxK1QAAAABJRU5ErkJggg==","orcid":"","institution":"Universidade Federal do Paraná","correspondingAuthor":true,"prefix":"","firstName":"Thiago","middleName":"Kerr","lastName":"Padilha","suffix":""},{"id":337723389,"identity":"9db3995f-9e35-4bb1-92f2-62b8f1da9fea","order_by":1,"name":"Tiago Lima Rodrigues","email":"","orcid":"","institution":"Universidade Federal do Paraná","correspondingAuthor":false,"prefix":"","firstName":"Tiago","middleName":"Lima","lastName":"Rodrigues","suffix":""}],"badges":[],"createdAt":"2024-07-23 18:05:39","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4790672/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4790672/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":65838810,"identity":"f49215dc-2b87-4e82-bcef-874e512b2c7f","added_by":"auto","created_at":"2024-10-03 11:31:47","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1465077,"visible":true,"origin":"","legend":"","description":"","filename":"ManuscriptThiagoPadilha.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4790672/v1_covered_d943bb05-f751-49a4-a6e9-a3168e0fe01c.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Study of the RTM effect in gravity disturbances and height anomalies at future IHRF stations in Brazil using different approaches, Digital Elevation Model with forests and buildings removed and lateral topographic density model","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Residual terrain Modelling, IHRS, spatial domain approaches, UNB_TopoDensT, FABDEM","lastPublishedDoi":"10.21203/rs.3.rs-4790672/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4790672/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"The present work aimed to evaluate the use of different approaches (rectangular prisms, polyhedrons, tesseroids and point mass) in spatial domain to provide RTM gravity disturbance and height anomaly at future IHRS stations in Brazil. 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